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@@ -21,6 +21,7 @@ class VolumetricLightingShader extends hrt.shader.PbrShader {
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@param var gamma : Float;
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@param var maxDist : Float;
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+ @param var decayPower : Float;
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@param var cameraInverseViewProj : Mat4;
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@param var cameraPosition : Vec3;
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@@ -72,7 +73,7 @@ class VolumetricLightingShader extends hrt.shader.PbrShader {
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}
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var end = startPos + d * camDir;
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- var density = smoothstep(0.0, 1.0, distance(startPos, end) / maxDist);
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+ var density = smoothstep(0.0, 1.0, pow(distance(startPos, end) / maxDist, decayPower));
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var fog = 0.0;
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for ( i in 1...steps ) {
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@@ -123,6 +124,7 @@ class VolumetricLighting extends RendererFX {
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@:s public var ditheringIntensity : Float = 1.0;
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@:s public var maxDist : Float = 30.0;
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+ @:s public var decayPower : Float = 1.0;
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override function makeInstance( ctx : hrt.prefab.Context ) : hrt.prefab.Context {
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ctx = super.makeInstance(ctx);
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@@ -151,6 +153,7 @@ class VolumetricLighting extends RendererFX {
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r.ctx.engine.pushTarget(tex);
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pass.shader.maxDist = maxDist;
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+ pass.shader.decayPower = decayPower;
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pass.shader.gamma = gamma;
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pass.shader.bottom = bottom;
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@@ -216,6 +219,7 @@ class VolumetricLighting extends RendererFX {
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<dt>Top</dt><dd><input type="range" min="0" max="10" field="top"/></dd>
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<dt>Falloff</dt><dd><input type="range" min="0" max="1" field="fallOff"/></dd>
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<dt>Decay distance</dt><dd><input type="range" min="0" max="50" field="maxDist"/></dd>
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+ <dt>Decay power</dt><dd><input type="range" min="0.2" max="5" field="decayPower"/></dd>
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</dl>
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</div>
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<div class="group" name="Rendering">
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clementlandrin